Test: Ocean Characteristics/ Ocean Currents

What is the source of most of the salt in the ocean?

• human activites.

• rocks and land

• fish

• wind

How many named oceans are there?

• 2

• 3

• 5

• 6

Minerals and nutrients from deep in the ocean are brought to the surface in cold water as a result of __________________.

• thermal pollution
• upwelling
• marine turbulence
• human activity

Seawater is typically denser than freshwater due to seawater’s —

• Greater depth
• Lower freezing point
• Smaller mass
• Higher salinity

The high salinity of the Mediterranean Sea is due primarily to —

• Precipitation
• Deposition
• Volcanoes
• Evaporation

As the depth of the ocean water ______________, the temperature _________________.

• increases, decreases
• decreases, increases

What effects salinity? 

• Evaporation rates
• runoff
• Both evaporation rates and runoff

The highest salinity would be found in which of the following areas?

• an area with high rates of precipitation
• an area with high rates of evaporation
• an area with plenty of runoff
• all of the above

______ causes surface currents.

• The Coriolis Effect

• gravity

• density differences

• wind

In addition to salinity, what factor affects the density of seawater?

• depth
• latitude
• temperature
• salt content